Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6080209 | Stable colorant compositions | Matthias Wiesenfeldt, Johannes P. Dix, Manfred Herrmann | 2000-06-27 |
| 4350434 | Electrophotographic copying machine | Norbert Schankat, Manfred Weinzierl, Walter Franke | 1982-09-21 |
| 4349730 | Data processing device for reading and processing visually observable information present on a data carrier | Josef Pfeifer, Eberhard Zieran | 1982-09-14 |
| 4334219 | Operation setting device having stationary touch-sensitive control elements | Klaus Mischo | 1982-06-08 |